Quote Originally Posted by allen mullis View Post
It is also possible, depending on the era of control that the chip for the 4th and 5th axis were left out of the break-out board.
Thanks, I'll have a look. My control seems to have been upgraded to an SBC or otherwise is on the newer side of hardware revisions if that matters. If the chips are missing, I'm pretty comfortable replacing them.

I'll post back with what I find out.